drm/amd/display: only enable HDCP for DCN+

[Why]
We don't support HDCP for pre RAVEN asics

[How]
Check if we are RAVEN+. Use this to attach the content_protection
property, this way usermode can't try to enable HDCP on pre DCN asics.

Also we need to update the module on hpd so guard it aswell

Signed-off-by: Bhawanpreet Lakha <Bhawanpreet.Lakha@amd.com>
Reviewed-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
index f64a01e..be44047 100644 (file)
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
@@ -737,14 +737,16 @@ static int amdgpu_dm_init(struct amdgpu_device *adev)
        amdgpu_dm_init_color_mod();
 
 #ifdef CONFIG_DRM_AMD_DC_HDCP
-       adev->dm.hdcp_workqueue = hdcp_create_workqueue(&adev->psp, &init_params.cp_psp, adev->dm.dc);
+       if (adev->asic_type >= CHIP_RAVEN) {
+               adev->dm.hdcp_workqueue = hdcp_create_workqueue(&adev->psp, &init_params.cp_psp, adev->dm.dc);
 
-       if (!adev->dm.hdcp_workqueue)
-               DRM_ERROR("amdgpu: failed to initialize hdcp_workqueue.\n");
-       else
-               DRM_DEBUG_DRIVER("amdgpu: hdcp_workqueue init done %p.\n", adev->dm.hdcp_workqueue);
+               if (!adev->dm.hdcp_workqueue)
+                       DRM_ERROR("amdgpu: failed to initialize hdcp_workqueue.\n");
+               else
+                       DRM_DEBUG_DRIVER("amdgpu: hdcp_workqueue init done %p.\n", adev->dm.hdcp_workqueue);
 
-       dc_init_callbacks(adev->dm.dc, &init_params);
+               dc_init_callbacks(adev->dm.dc, &init_params);
+       }
 #endif
        if (amdgpu_dm_initialize_drm_device(adev)) {
                DRM_ERROR(
@@ -1506,7 +1508,8 @@ static void handle_hpd_irq(void *param)
        mutex_lock(&aconnector->hpd_lock);
 
 #ifdef CONFIG_DRM_AMD_DC_HDCP
-       hdcp_reset_display(adev->dm.hdcp_workqueue, aconnector->dc_link->link_index);
+       if (adev->asic_type >= CHIP_RAVEN)
+               hdcp_reset_display(adev->dm.hdcp_workqueue, aconnector->dc_link->link_index);
 #endif
        if (aconnector->fake_enable)
                aconnector->fake_enable = false;
@@ -5152,7 +5155,8 @@ void amdgpu_dm_connector_init_helper(struct amdgpu_display_manager *dm,
                drm_connector_attach_vrr_capable_property(
                        &aconnector->base);
 #ifdef CONFIG_DRM_AMD_DC_HDCP
-               drm_connector_attach_content_protection_property(&aconnector->base, false);
+               if (adev->asic_type >= CHIP_RAVEN)
+                       drm_connector_attach_content_protection_property(&aconnector->base, false);
 #endif
        }
 }